Liquid Crystal Display Device

Abstract

A liquid crystal display device with shorter response time and simpler configuration is provided. The liquid crystal display device including: a plurality of pixels each including a liquid crystal element; and a driving section performing an image display driving by applying a driving voltage based on a video signal to the liquid crystal element in each of the pixels. The driving section performs an overdrive processing on the video signal of current frame to generate an overdriven video signal based on a current frame image and an immediately preceding frame image of the input images based on the video signals, and based on immediately-preceding-state information which is additional information briefly representing a immediately preceding state of the liquid crystal element of the pixel.

1 . A liquid crystal display device comprising:
 a plurality of pixels each including a liquid crystal element therein; and   a driving section performing an image display driving by applying a driving voltage based on a video signal to the liquid crystal element in each of the pixels,   wherein the driving section performs an overdrive processing on the video signal of current frame to generate an overdriven video signal based on a current frame image and an immediately preceding frame image of the input images based on the video signals, and based on immediately-preceding-state information which is additional information briefly representing a immediately preceding state of the liquid crystal element of the pixel.   
   
   
       2 . The liquid crystal display device according to  claim 1 , wherein the display driving section generates current state information, which is additional information briefly representing a current state of the liquid crystal element and is to be used in the overdrive processing on the video signal of following frame, based on the current frame image, the immediately preceding frame image and the immediately-preceding-state information. 
   
   
       3 . The LCD device according to  claim 1 , wherein the driving section uses compressed information as the preceding state information, the compressed information being formed through compressing images of frames preceding the current frame by two or more frames. 
   
   
       4 . The LCD device according to  claim 3 , wherein the compressed information is configured to include a plurality of information pieces each formed through compressing an image of each of preceding frames, the information piece being weighted in its information amount so that the information amount of the information piece decreases as going backward from the current frame. 
   
   
       5 . The liquid crystal display device according to  claim 1 , wherein the preceding state information is configured to include an in-pixel deviation and a flag counter value, the in-pixel deviation representing a deviation of a liquid crystal state within a pixel, and the flag counter value representing which one of preceding frames is responsible for singular response of the liquid crystal. 
   
   
       6 . The LCD device according to  claim 1 , wherein the liquid crystal element is configured to include the vertical alignment mode (VA-mode) liquid crystal.